Enter "<477MYFR13NDS4R3SP13S>" as a case-sensitive code to enable Big Head mode in "Local Multiplayer" games. Reset the game to its default options to return to normal.

Invisibility mode

Enter "Inv1s1bleEv3ryth1ng" as a case-sensitive code to unlock the "Invisibility Mode" option at the "Multiplayer Split-Screen" section of the "Modifiers" menu. While playing the game, press B to become invisible instead of sprinting.

Tag mode

Enter "NotIt!!!11" as a case-sensitive code to unlock the "Tag" option at the "Multiplayer Split-Screen" section of the "Modifiers" menu. Tag mode requires three or more players.

Switch weapon loadouts in Multiplayer mode

During a split-screen match in Multiplayer mode, hold 2 and press Left or Right to change your weapon. On a Classic Controller or Pro, hold Minus and press Left Analog-stick Left or Right. On a GameCube controller, hold Z and press A. When the scoreboard appears, press Left or Right.

Multiplayer weapons and gadgets

Reach the indicated level in Multiplayer mode to unlock the corresponding item: